Which of the following is an example of a biological hazard?

Raw meat is considered a biological hazard because it can harbor harmful microorganisms such as bacteria, viruses, and parasites that pose a risk to food safety and public health. When handled improperly, raw meat can lead to foodborne illnesses if consumed. The presence of pathogens like Salmonella or E. coli in raw meat requires stringent food safety practices, including proper cooking temperatures and cross-contamination prevention, to ensure that food is safe for consumption.

In contrast, cleaning chemicals represent a chemical hazard rather than a biological one, as they can cause harm due to their chemical properties. Glass shards are classified as physical hazards since they can cause injury or contamination without being related to biological organisms. Pests in the kitchen present a health risk primarily by acting as carriers of bacteria, but they are not a direct biological hazard like raw meat, which inherently contains live microorganisms. Thus, raw meat stands out as the key example of a biological hazard in food safety contexts.